#include<stdio.h>
#include "add.c"
//这是注释
#define M 100
extern int g_val;
extern int Add(int x, int y);
int main()
{
    //开始
    struct s k;
    int b = 10;
    int c = Add(M,b);
    printf("%d", c);
    return 0;
    //结束
}